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Finding the Fourth Proportional to 640,753.11, 884,211.27 and 350,359.20

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Solution

The fourth proportional to 640,753.11, 884,211.27 and 350,359.20 is: 483,480.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,753.11 : 884,211.27 = 350,359.20 : x
  2. Step 2: Convert to fraction form
    640,753.11/884,211.27 = 350,359.20/x
  3. Step 3: Cross multiply
    640,753.11x = 884,211.27 × 350,359.20
  4. Step 4: Simplify right side
    640,753.11x = 309,791,553,188.18
  5. Step 5: Solve for x
    x = 309,791,553,188.18/640,753.11
  6. Step 6: Final answer
    x = 483,480.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.